Hi Jens, when porting my zoned XFS code I ran into a regression in __bio_iov_iter_get_pages 6.12, which isn't all that surprising given that this path isn't used upstream. After spending some time trying to fix it I gave up and ported my code to the scheme used in btrfs where the file system splits bios to the hardware boundaries, which more closely mirror what we do for the "normal" bio path. Either way we should not carry dead code, so patch 1 removes that. Patch 2 also removes our other zone append helper as for the same reason no one but semi-passthrough interfaces like nvmet should use it, and those can simply use bio_add_pc_page.
